Specification for Welded Ferritic Stainless Steel Feedwater Heater Tubes
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.01 | ||
| Si | - | 0.20 | ||
| Mn | - | 0.30 | ||
| P | - | - | ||
| S | - | - | ||
| Ni | - | 0.15 | ||
| Cr | 28.00 | 30.00 | ||
| Al | - | - | ||
| Cu | - | 0.15 | ||
| Ti | - | - | ||
| Fe | - | - | ||
| N | - | 0.02 | ||
| Mo | 3.50 | 4.20 |
Specification for Welded Ferritic Stainless Steel Feedwater Heater Tubes
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 173 (≥) | 996 (≥) | 43 | 14 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 233 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 336 (≥) | 758 (≥) | 22 | 14 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 769 | 777 | 158 |
We can customize the production of SA-803 29-4C grade, contact us for the best solution.
–sales@specificsteel.com